Describe the carriage of carbon dioxide (CO2) in blood

[Click here to toggle visibility of the answers]

College Answer

For a good answer candidates were expected to mention values for CO2 content in blood as 
well as the various ways it is carried (e.g. dissolved, as bicarbonate, combined with 
haemoglobin, etc) and a description of these modes. Wherever possible candidates are 
encouraged to illustrate their answer, in particular if those illustrations are core knowledge. 
Candidates who didn’t, were not penalised if they were still able to provide the required 
responses. However, candidates who did appeared to better synthesize a response. 
Candidates are reminded to include, and know, what are the appropriate units for any 
values they mention.